1001912408 has 192 divisors, whose sum is σ = 2507954400. Its totient is φ = 371589120.

The previous prime is 1001912363. The next prime is 1001912411. The reversal of 1001912408 is 8042191001.

It is a Cunningham number, because it is equal to 31653²-1.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5191160 + ... + 5191352.

Almost surely, 2^1001912408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001912408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1253977200).

1001912408 is an abundant number, since it is smaller than the sum of its proper divisors (1506041992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001912408 is a wasteful number, since it uses less digits than its factorization.

1001912408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 1001912408 is about 31652.9999842037. Note that the first 4 decimals coincide. The cubic root of 1001912408 is about 1000.6370633974.

The spelling of 1001912408 in words is "one billion, one million, nine hundred twelve thousand, four hundred eight".